The Swedish authorities are desperate to go after tax revenue however they can, but the courts have just made it easier on them to do so. Maybe the next in line will be SK*Gs with accounts having their primary address on file in Portugal (or whatever European country is hot on the radar for Swedish authorities at the time).

Should SK*Gs in Denmark be concerned about where things may head next?

I guess SK won't get in the habit of purging its records on SK EB customer activity anytime soon.